NJM37770D3# NJR, NJM37770D3# Datasheet - Page 8

• Manufacturer Part Number: NJM37770D3#
• Description: IC STEPPER MOTOR DRIVER 16-DIP
• Manufacturer: NJR

Specifications of NJM37770D3#

• Applications: Stepper Motor Driver, 2 Phase
• Number Of Outputs: 1
• Current - Output: 1.3A
• Voltage - Load: 10 V ~ 55 V
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -20°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.325", 8.25mm), 12 Leads + 2 Fins
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NJM#37770D3; NJM#37770D3

Analog control
Sensor resistor
800 mA max motor current at V
External recirculation diodes
connected to the motor terminals and the cathodes to the V
maximum performance and reliability.
- 8 -
As the current levels can be continuously controlled by modulating the V
The R
The peak motor current, i
i
Recirculation diodes must be connected across each motor terminal and the supply voltage, V
Figure 8. Copper foil used as a heatsink
m
=(V
R
S
• 0.080) / R
resistor should be of a noninductive type power resistor. A 0.5 ohm resistor, tolerance ≤ 1%, is a good choice for
S
[A], at 100% level
m
, can be calculated by using the formula:
R
= 5V.
Figure 9. Principal operating sequence.
MM
voltage. Ultra-fast recovery diodes should be used for
R
input, limited microstepping can be achieved.
MM
. The anodes shall be
Ver.2006-04-11